I'm looking at Zen Desk chat, I like the default overlay and the fact that it doesn't make a bunch of annoying sounds when the site loads, it doesn't seem intrusive but I'm a little bit confused about the pricing. I don't understand why it's limited to 24x5 unless I'm paying $55 a month. At the end of the day I guess it's not a lot of money but I really have no incite into this.